<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>

    <style>

        #box{



            background-color: red;
            border:  solid black;
        }

        #div1{

            height: 50px;

            background-color: pink;

            margin: 100px;


        }

        #div2{

            height: 50px;

            background-color: yellow;


        }


    </style>
</head>
<body>

<div id="box">

    <div id="div1">1</div>

    <div id="div2">2</div>

</div>




</body>
</html>